Hsp70 in cancer: back to the future

Area of Science:

• Oncology
• Molecular Biology
• Biochemistry

Background:

• Heat shock protein 70 (Hsp70) is implicated in cancer initiation and progression.
• Hsp70's role in cancer extends beyond its known chaperone functions.
• Cell signaling pathways are increasingly recognized as critical in Hsp70's cancer-related effects.

Purpose of the Study:

• To review recent breakthroughs in understanding Hsp70's non-chaperone functions in cancer.
• To highlight the role of the co-chaperone Bag3 in directing Hsp70 signaling.
• To discuss how these discoveries inform cancer drug development.

Main Methods:

• Review of mechanistic studies from cell culture and animal models.
• Analysis of research linking Hsp70 to cancer signaling pathways.
• Examination of the co-chaperone Bag3's influence on Hsp70 activity.

Main Results:

• Hsp70 influences cancer through cell signaling mechanisms, not solely chaperone activity.
• The co-chaperone Bag3 is a key regulator of Hsp70's signaling functions.
• Recent findings reveal novel therapeutic targets related to Hsp70 and Bag3.

Conclusions:

• Hsp70's non-chaperone, signaling-related roles are crucial in cancer.
• Targeting the Hsp70-Bag3 interaction presents a promising avenue for cancer therapy.
• Further research into Hsp70 signaling pathways can drive innovative drug development.